Listen, Supergirl, I'm gonna break you down into so many little pieces that my grandmother, who can do a thousand piece puzzle of clear blue sky in less than an hour will never be able to finish putting you back together again, even if she does go back in time to when her vision was perfect.

I haven't seen any of the show after season 1, but I don't remember her having the power to magically make puzzles solve themselves. She had an extremely powerful telekinesis ability, and she had a book of spells that that could alter living creatures in various weird ways, but that was basically it.